Merge pull request #20 from timklge/feat/error-indication

Show no gps / no weather data error in visual data fields instead of default "No sensor"

app/build.gradle.kts

@@ -15,8 +15,8 @@ android {
         applicationId = "de.timklge.karooheadwind"
         minSdk = 26
         targetSdk = 35
-        versionCode = 6
-        versionName = "1.1.2"
+        versionCode = 7
+        versionName = "1.1.3"
     }
 
     signingConfigs {

app/manifest.json

@@ -3,9 +3,9 @@
   "packageName": "de.timklge.karooheadwind",
   "iconUrl": "https://github.com/timklge/karoo-headwind/releases/latest/download/karoo-headwind.png",
   "latestApkUrl": "https://github.com/timklge/karoo-headwind/releases/latest/download/app-release.apk",
-  "latestVersion": "1.1.2",
-  "latestVersionCode": 6,
+  "latestVersion": "1.1.3",
+  "latestVersionCode": 7,
   "developer": "timklge",
   "description": "Provides headwind direction, wind speed and other weather data fields",
-  "releaseNotes": "Add hourly forecast and temperature datafields. Add setting to use absolute wind direction on headwind datafield."
+  "releaseNotes": "Adds hourly forecast. Shows error message in fields if weather data or gps are unavailable and remembers last known gps position."
 }

app/src/main/AndroidManifest.xml

@@ -4,13 +4,13 @@
 
     <application
         android:allowBackup="true"
-        android:icon="@mipmap/ic_launcher"
+        android:icon="@drawable/wind"
         android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.AppCompat">
         <activity
             android:name="de.timklge.karooheadwind.MainActivity"
+            android:theme="@style/SplashTheme"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/kotlin/de/timklge/karooheadwind/DataStore.kt

@@ -0,0 +1,162 @@
+package de.timklge.karooheadwind
+
+import android.content.Context
+import android.util.Log
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.core.stringPreferencesKey
+import de.timklge.karooheadwind.datatypes.GpsCoordinates
+import de.timklge.karooheadwind.screens.HeadwindSettings
+import de.timklge.karooheadwind.screens.HeadwindStats
+import de.timklge.karooheadwind.screens.HeadwindWidgetSettings
+import de.timklge.karooheadwind.screens.WindUnit
+import io.hammerhead.karooext.KarooSystemService
+import io.hammerhead.karooext.models.UserProfile
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.channels.trySendBlocking
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.callbackFlow
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.map
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+
+
+val jsonWithUnknownKeys = Json { ignoreUnknownKeys = true }
+
+val settingsKey = stringPreferencesKey("settings")
+val widgetSettingsKey = stringPreferencesKey("widgetSettings")
+val currentDataKey = stringPreferencesKey("current")
+val statsKey = stringPreferencesKey("stats")
+val lastKnownPositionKey = stringPreferencesKey("lastKnownPosition")
+
+suspend fun saveSettings(context: Context, settings: HeadwindSettings) {
+    context.dataStore.edit { t ->
+        t[settingsKey] = Json.encodeToString(settings)
+    }
+}
+
+suspend fun saveWidgetSettings(context: Context, settings: HeadwindWidgetSettings) {
+    context.dataStore.edit { t ->
+        t[widgetSettingsKey] = Json.encodeToString(settings)
+    }
+}
+
+suspend fun saveStats(context: Context, stats: HeadwindStats) {
+    context.dataStore.edit { t ->
+        t[statsKey] = Json.encodeToString(stats)
+    }
+}
+
+suspend fun saveCurrentData(context: Context, forecast: OpenMeteoCurrentWeatherResponse) {
+    context.dataStore.edit { t ->
+        t[currentDataKey] = Json.encodeToString(forecast)
+    }
+}
+
+suspend fun saveLastKnownPosition(context: Context, gpsCoordinates: GpsCoordinates) {
+    Log.i(KarooHeadwindExtension.TAG, "Saving last known position: $gpsCoordinates")
+
+    try {
+        context.dataStore.edit { t ->
+            t[lastKnownPositionKey] = Json.encodeToString(gpsCoordinates)
+        }
+    } catch(e: Throwable){
+        Log.e(KarooHeadwindExtension.TAG, "Failed to save last known position", e)
+    }
+}
+
+
+fun Context.streamWidgetSettings(): Flow<HeadwindWidgetSettings> {
+    return dataStore.data.map { settingsJson ->
+        try {
+            if (settingsJson.contains(widgetSettingsKey)){
+                jsonWithUnknownKeys.decodeFromString<HeadwindWidgetSettings>(settingsJson[widgetSettingsKey]!!)
+            } else {
+                jsonWithUnknownKeys.decodeFromString<HeadwindWidgetSettings>(HeadwindWidgetSettings.defaultWidgetSettings)
+            }
+        } catch(e: Throwable){
+            Log.e(KarooHeadwindExtension.TAG, "Failed to read widget preferences", e)
+            jsonWithUnknownKeys.decodeFromString<HeadwindWidgetSettings>(HeadwindWidgetSettings.defaultWidgetSettings)
+        }
+    }.distinctUntilChanged()
+}
+
+fun Context.streamSettings(karooSystemService: KarooSystemService): Flow<HeadwindSettings> {
+    return dataStore.data.map { settingsJson ->
+        try {
+            if (settingsJson.contains(settingsKey)){
+                jsonWithUnknownKeys.decodeFromString<HeadwindSettings>(settingsJson[settingsKey]!!)
+            } else {
+                val defaultSettings = jsonWithUnknownKeys.decodeFromString<HeadwindSettings>(HeadwindSettings.defaultSettings)
+
+                val preferredUnits = karooSystemService.streamUserProfile().first().preferredUnit
+
+                defaultSettings.copy(
+                    windUnit = if (preferredUnits.distance == UserProfile.PreferredUnit.UnitType.METRIC) WindUnit.KILOMETERS_PER_HOUR else WindUnit.MILES_PER_HOUR,
+                )
+            }
+        } catch(e: Throwable){
+            Log.e(KarooHeadwindExtension.TAG, "Failed to read preferences", e)
+            jsonWithUnknownKeys.decodeFromString<HeadwindSettings>(HeadwindSettings.defaultSettings)
+        }
+    }.distinctUntilChanged()
+}
+
+fun Context.streamStats(): Flow<HeadwindStats> {
+    return dataStore.data.map { statsJson ->
+        try {
+            jsonWithUnknownKeys.decodeFromString<HeadwindStats>(
+                statsJson[statsKey] ?: HeadwindStats.defaultStats
+            )
+        } catch(e: Throwable){
+            Log.e(KarooHeadwindExtension.TAG, "Failed to read stats", e)
+            jsonWithUnknownKeys.decodeFromString<HeadwindStats>(HeadwindStats.defaultStats)
+        }
+    }.distinctUntilChanged()
+}
+
+suspend fun Context.getLastKnownPosition(): GpsCoordinates? {
+    val settingsJson = dataStore.data.first()
+
+    try {
+        val lastKnownPositionString = settingsJson[lastKnownPositionKey] ?: return null
+        val lastKnownPosition = jsonWithUnknownKeys.decodeFromString<GpsCoordinates>(
+            lastKnownPositionString
+        )
+
+        return lastKnownPosition
+    } catch(e: Throwable){
+        Log.e(KarooHeadwindExtension.TAG, "Failed to read last known position", e)
+        return null
+    }
+}
+
+fun KarooSystemService.streamUserProfile(): Flow<UserProfile> {
+    return callbackFlow {
+        val listenerId = addConsumer { userProfile: UserProfile ->
+            trySendBlocking(userProfile)
+        }
+        awaitClose {
+            removeConsumer(listenerId)
+        }
+    }
+}
+
+fun Context.streamCurrentWeatherData(): Flow<OpenMeteoCurrentWeatherResponse?> {
+    return dataStore.data.map { settingsJson ->
+        try {
+            val data = settingsJson[currentDataKey]
+            data?.let { d -> jsonWithUnknownKeys.decodeFromString<OpenMeteoCurrentWeatherResponse>(d) }
+        } catch (e: Throwable) {
+            Log.e(KarooHeadwindExtension.TAG, "Failed to read weather data", e)
+            null
+        }
+    }.distinctUntilChanged().map { response ->
+        if (response != null && response.current.time * 1000 >= System.currentTimeMillis() - (1000 * 60 * 60 * 12)){
+            response
+        } else {
+            null
+        }
+    }
+}

app/src/main/kotlin/de/timklge/karooheadwind/Extensions.kt

@@ -2,8 +2,25 @@ package de.timklge.karooheadwind
 
 import android.content.Context
 import android.util.Log
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.DpSize
+import androidx.compose.ui.unit.TextUnit
+import androidx.compose.ui.unit.TextUnitType
+import androidx.compose.ui.unit.dp
 import androidx.datastore.preferences.core.edit
 import androidx.datastore.preferences.core.stringPreferencesKey
+import androidx.glance.GlanceModifier
+import androidx.glance.appwidget.ExperimentalGlanceRemoteViewsApi
+import androidx.glance.appwidget.GlanceRemoteViews
+import androidx.glance.appwidget.RemoteViewsCompositionResult
+import androidx.glance.color.ColorProvider
+import androidx.glance.layout.Alignment
+import androidx.glance.layout.Box
+import androidx.glance.layout.fillMaxSize
+import androidx.glance.layout.padding
+import androidx.glance.text.Text
+import androidx.glance.text.TextAlign
+import androidx.glance.text.TextStyle
 import de.timklge.karooheadwind.datatypes.GpsCoordinates
 import de.timklge.karooheadwind.screens.HeadwindSettings
 import de.timklge.karooheadwind.screens.HeadwindStats
@@ -22,17 +39,17 @@ import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.TimeoutCancellationException
 import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.channels.trySendBlocking
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.distinctUntilChanged
-import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.emitAll
 import kotlinx.coroutines.flow.filterNotNull
 import kotlinx.coroutines.flow.first
-import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.map
-import kotlinx.coroutines.flow.mapNotNull
 import kotlinx.coroutines.flow.scan
 import kotlinx.coroutines.flow.single
 import kotlinx.coroutines.flow.timeout
@@ -44,37 +61,6 @@ import kotlin.math.abs
 import kotlin.math.absoluteValue
 import kotlin.time.Duration.Companion.seconds
 
-val jsonWithUnknownKeys = Json { ignoreUnknownKeys = true }
-
-val settingsKey = stringPreferencesKey("settings")
-val widgetSettingsKey = stringPreferencesKey("widgetSettings")
-val currentDataKey = stringPreferencesKey("current")
-val statsKey = stringPreferencesKey("stats")
-
-suspend fun saveSettings(context: Context, settings: HeadwindSettings) {
-    context.dataStore.edit { t ->
-        t[settingsKey] = Json.encodeToString(settings)
-    }
-}
-
-suspend fun saveWidgetSettings(context: Context, settings: HeadwindWidgetSettings) {
-    context.dataStore.edit { t ->
-        t[widgetSettingsKey] = Json.encodeToString(settings)
-    }
-}
-
-suspend fun saveStats(context: Context, stats: HeadwindStats) {
-    context.dataStore.edit { t ->
-        t[statsKey] = Json.encodeToString(stats)
-    }
-}
-
-suspend fun saveCurrentData(context: Context, forecast: OpenMeteoCurrentWeatherResponse) {
-    context.dataStore.edit { t ->
-        t[currentDataKey] = Json.encodeToString(forecast)
-    }
-}
-
 fun KarooSystemService.streamDataFlow(dataTypeId: String): Flow<StreamState> {
     return callbackFlow {
         val listenerId = addConsumer(OnStreamState.StartStreaming(dataTypeId)) { event: OnStreamState ->
@@ -86,189 +72,14 @@ fun KarooSystemService.streamDataFlow(dataTypeId: String): Flow<StreamState> {
     }
 }
 
-fun Context.streamCurrentWeatherData(): Flow<OpenMeteoCurrentWeatherResponse> {
-    return dataStore.data.map { settingsJson ->
-        try {
-            val data = settingsJson[currentDataKey]
-            data?.let { d -> jsonWithUnknownKeys.decodeFromString<OpenMeteoCurrentWeatherResponse>(d) }
-        } catch (e: Throwable) {
-            Log.e(KarooHeadwindExtension.TAG, "Failed to read weather data", e)
-            null
-        }
-    }.filterNotNull().distinctUntilChanged().filter { it.current.time * 1000 >= System.currentTimeMillis() - (1000 * 60 * 60 * 12) }
-}
+fun<T> Flow<T>.throttle(timeout: Long): Flow<T> = flow {
+    var lastEmissionTime = 0L
 
-fun Context.streamWidgetSettings(): Flow<HeadwindWidgetSettings> {
-    return dataStore.data.map { settingsJson ->
-        try {
-            if (settingsJson.contains(widgetSettingsKey)){
-                jsonWithUnknownKeys.decodeFromString<HeadwindWidgetSettings>(settingsJson[widgetSettingsKey]!!)
-            } else {
-                jsonWithUnknownKeys.decodeFromString<HeadwindWidgetSettings>(HeadwindWidgetSettings.defaultWidgetSettings)
-            }
-        } catch(e: Throwable){
-            Log.e(KarooHeadwindExtension.TAG, "Failed to read widget preferences", e)
-            jsonWithUnknownKeys.decodeFromString<HeadwindWidgetSettings>(HeadwindWidgetSettings.defaultWidgetSettings)
-        }
-    }.distinctUntilChanged()
-}
-
-fun Context.streamSettings(karooSystemService: KarooSystemService): Flow<HeadwindSettings> {
-    return dataStore.data.map { settingsJson ->
-        try {
-            if (settingsJson.contains(settingsKey)){
-                jsonWithUnknownKeys.decodeFromString<HeadwindSettings>(settingsJson[settingsKey]!!)
-            } else {
-                val defaultSettings = jsonWithUnknownKeys.decodeFromString<HeadwindSettings>(HeadwindSettings.defaultSettings)
-
-                val preferredUnits = karooSystemService.streamUserProfile().first().preferredUnit
-
-                defaultSettings.copy(
-                    windUnit = if (preferredUnits.distance == UserProfile.PreferredUnit.UnitType.METRIC) WindUnit.KILOMETERS_PER_HOUR else WindUnit.MILES_PER_HOUR,
-                )
-            }
-        } catch(e: Throwable){
-            Log.e(KarooHeadwindExtension.TAG, "Failed to read preferences", e)
-            jsonWithUnknownKeys.decodeFromString<HeadwindSettings>(HeadwindSettings.defaultSettings)
-        }
-    }.distinctUntilChanged()
-}
-
-fun Context.streamStats(): Flow<HeadwindStats> {
-    return dataStore.data.map { statsJson ->
-        try {
-            jsonWithUnknownKeys.decodeFromString<HeadwindStats>(
-                statsJson[statsKey] ?: HeadwindStats.defaultStats
-            )
-        } catch(e: Throwable){
-            Log.e(KarooHeadwindExtension.TAG, "Failed to read stats", e)
-            jsonWithUnknownKeys.decodeFromString<HeadwindStats>(HeadwindStats.defaultStats)
-        }
-    }.distinctUntilChanged()
-}
-
-fun KarooSystemService.streamUserProfile(): Flow<UserProfile> {
-    return callbackFlow {
-        val listenerId = addConsumer { userProfile: UserProfile ->
-            trySendBlocking(userProfile)
-        }
-        awaitClose {
-            removeConsumer(listenerId)
+    collect { value ->
+        val currentTime = System.currentTimeMillis()
+        if (currentTime - lastEmissionTime >= timeout) {
+            emit(value)
+            lastEmissionTime = currentTime
         }
     }
-}
-
-@OptIn(FlowPreview::class)
-suspend fun KarooSystemService.makeOpenMeteoHttpRequest(gpsCoordinates: GpsCoordinates, settings: HeadwindSettings, profile: UserProfile?): HttpResponseState.Complete {
-    val precipitationUnit = if (profile?.preferredUnit?.distance != UserProfile.PreferredUnit.UnitType.IMPERIAL) PrecipitationUnit.MILLIMETERS else PrecipitationUnit.INCH
-    val temperatureUnit = if (profile?.preferredUnit?.temperature != UserProfile.PreferredUnit.UnitType.IMPERIAL) TemperatureUnit.CELSIUS else TemperatureUnit.FAHRENHEIT
-
-    return callbackFlow {
-        // https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41&current=surface_pressure,temperature_2m,relative_humidity_2m,precipitation,weather_code,cloud_cover,wind_speed_10m,wind_direction_10m,wind_gusts_10m&hourly=temperature_2m,precipitation_probability,precipitation,weather_code,wind_speed_10m,wind_direction_10m,wind_gusts_10m&timeformat=unixtime&past_hours=1&forecast_days=1&forecast_hours=12
-        val url = "https://api.open-meteo.com/v1/forecast?latitude=${gpsCoordinates.lat}&longitude=${gpsCoordinates.lon}&current=surface_pressure,temperature_2m,relative_humidity_2m,precipitation,weather_code,cloud_cover,wind_speed_10m,wind_direction_10m,wind_gusts_10m&hourly=temperature_2m,precipitation_probability,precipitation,weather_code,wind_speed_10m,wind_direction_10m,wind_gusts_10m&timeformat=unixtime&past_hours=0&forecast_days=1&forecast_hours=12&wind_speed_unit=${settings.windUnit.id}&precipitation_unit=${precipitationUnit.id}&temperature_unit=${temperatureUnit.id}"
-
-        Log.d(KarooHeadwindExtension.TAG, "Http request to ${url}...")
-
-        val listenerId = addConsumer(
-            OnHttpResponse.MakeHttpRequest(
-                "GET",
-                url,
-                waitForConnection = false,
-            ),
-        ) { event: OnHttpResponse ->
-            Log.d(KarooHeadwindExtension.TAG, "Http response event $event")
-            if (event.state is HttpResponseState.Complete){
-                trySend(event.state as HttpResponseState.Complete)
-                close()
-            }
-        }
-        awaitClose {
-            removeConsumer(listenerId)
-        }
-    }.timeout(20.seconds).catch { e: Throwable ->
-        if (e is TimeoutCancellationException){
-            emit(HttpResponseState.Complete(500, mapOf(), null, "Timeout"))
-        } else {
-            throw e
-        }
-    }.single()
-}
-
-fun signedAngleDifference(angle1: Double, angle2: Double): Double {
-    val a1 = angle1 % 360
-    val a2 = angle2 % 360
-    var diff = abs(a1 - a2)
-
-    val sign = if (a1 < a2) {
-        if (diff > 180.0) -1 else 1
-    } else {
-        if (diff > 180.0) 1 else -1
-    }
-
-    if (diff > 180.0) {
-        diff = 360.0 - diff
-    }
-
-    return sign * diff
-}
-
-fun KarooSystemService.getRelativeHeadingFlow(context: Context): Flow<Double> {
-    val currentWeatherData = context.streamCurrentWeatherData()
-
-    return getHeadingFlow()
-        .filter { it >= 0 }
-        .combine(currentWeatherData) { bearing, data -> bearing to data }
-        .map { (bearing, data) ->
-            val windBearing = data.current.windDirection + 180
-            val diff = signedAngleDifference(bearing, windBearing)
-            Log.d(KarooHeadwindExtension.TAG, "Wind bearing: $bearing vs $windBearing => $diff")
-
-            diff
-        }
-}
-
-fun KarooSystemService.getHeadingFlow(): Flow<Double> {
-    // return flowOf(20.0)
-
-    return streamDataFlow(DataType.Type.LOCATION)
-        .mapNotNull { (it as? StreamState.Streaming)?.dataPoint?.values }
-        .map { values ->
-            val heading = values[DataType.Field.LOC_BEARING]
-            Log.d(KarooHeadwindExtension.TAG, "Updated gps bearing: $heading")
-            heading ?: 0.0
-        }
-        .distinctUntilChanged()
-        .scan(emptyList<Double>()) { acc, value -> /* Average over 3 values */
-            val newAcc = acc + value
-            if (newAcc.size > 3) newAcc.drop(1) else newAcc
-        }
-        .map { it.average() }
-}
-
-@OptIn(FlowPreview::class)
-fun KarooSystemService.getGpsCoordinateFlow(context: Context): Flow<GpsCoordinates> {
-    // return flowOf(GpsCoordinates(52.5164069,13.3784))
-
-    return streamDataFlow(DataType.Type.LOCATION)
-        .mapNotNull { (it as? StreamState.Streaming)?.dataPoint?.values }
-        .mapNotNull { values ->
-            val lat = values[DataType.Field.LOC_LATITUDE]
-            val lon = values[DataType.Field.LOC_LONGITUDE]
-
-            if (lat != null && lon != null){
-                Log.d(KarooHeadwindExtension.TAG, "Updated gps coords: $lat $lon")
-                GpsCoordinates(lat, lon)
-            } else {
-                Log.e(KarooHeadwindExtension.TAG, "Missing gps values: $values")
-                null
-            }
-        }
-        .combine(context.streamSettings(this)) { gps, settings -> gps to settings }
-        .map { (gps, settings) ->
-            val rounded = gps.round(settings.roundLocationTo.km.toDouble())
-            Log.d(KarooHeadwindExtension.TAG, "Round location to ${settings.roundLocationTo.km} - $rounded")
-            rounded
-        }
-        .distinctUntilChanged { old, new -> old.distanceTo(new).absoluteValue < 0.001 }
-        .debounce(Duration.ofSeconds(10))
 }

app/src/main/kotlin/de/timklge/karooheadwind/HeadingFlow.kt

@@ -0,0 +1,145 @@
+package de.timklge.karooheadwind
+
+import android.content.Context
+import android.util.Log
+import de.timklge.karooheadwind.datatypes.GpsCoordinates
+import io.hammerhead.karooext.KarooSystemService
+import io.hammerhead.karooext.models.DataType
+import io.hammerhead.karooext.models.StreamState
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.emitAll
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.scan
+
+
+sealed class HeadingResponse {
+    data object NoGps: HeadingResponse()
+    data object NoWeatherData: HeadingResponse()
+    data class Value(val diff: Double): HeadingResponse()
+}
+
+fun KarooSystemService.getRelativeHeadingFlow(context: Context): Flow<HeadingResponse> {
+    val currentWeatherData = context.streamCurrentWeatherData()
+
+    return getHeadingFlow(context)
+        .combine(currentWeatherData) { bearing, data -> bearing to data }
+        .map { (bearing, data) ->
+            when {
+                bearing is HeadingResponse.Value && data != null -> {
+                    val windBearing = data.current.windDirection + 180
+                    val diff = signedAngleDifference(bearing.diff, windBearing)
+
+                    Log.d(KarooHeadwindExtension.TAG, "Wind bearing: $bearing vs $windBearing => $diff")
+
+                    HeadingResponse.Value(diff)
+                }
+                bearing is HeadingResponse.NoGps -> HeadingResponse.NoGps
+                bearing is HeadingResponse.NoWeatherData || data == null -> HeadingResponse.NoWeatherData
+                else -> bearing
+            }
+        }
+}
+
+fun KarooSystemService.getHeadingFlow(context: Context): Flow<HeadingResponse> {
+    // return flowOf(HeadingResponse.Value(20.0))
+
+    return getGpsCoordinateFlow(context)
+        .map { coords ->
+            val heading = coords?.bearing
+            Log.d(KarooHeadwindExtension.TAG, "Updated gps bearing: $heading")
+            val headingValue = heading?.let { HeadingResponse.Value(it) }
+
+            headingValue ?: HeadingResponse.NoGps
+        }
+        .distinctUntilChanged()
+        .scan(emptyList<HeadingResponse>()) { acc, value -> /* Average over 3 values */
+            if (value !is HeadingResponse.Value) return@scan listOf(value)
+
+            val newAcc = acc + value
+            if (newAcc.size > 3) newAcc.drop(1) else newAcc
+        }
+        .map { data ->
+            Log.i(KarooHeadwindExtension.TAG, "Heading value: $data")
+
+            if (data.isEmpty()) return@map HeadingResponse.NoGps
+            if (data.firstOrNull() !is HeadingResponse.Value) return@map data.first()
+
+            val avgValues = data.mapNotNull { (it as? HeadingResponse.Value)?.diff }
+
+            if (avgValues.isEmpty()) return@map HeadingResponse.NoGps
+
+            val avg = avgValues.average()
+
+            HeadingResponse.Value(avg)
+        }
+}
+
+fun <T> concatenate(vararg flows: Flow<T>) = flow {
+    for (flow in flows) {
+        emitAll(flow)
+    }
+}
+
+fun<T> Flow<T>.dropNullsIfNullEncountered(): Flow<T?> = flow {
+    var hadValue = false
+
+    collect { value ->
+        if (!hadValue) {
+            emit(value)
+            if (value != null) hadValue = true
+        } else {
+            if (value != null) emit(value)
+        }
+    }
+}
+
+suspend fun KarooSystemService.updateLastKnownGps(context: Context) {
+    while (true) {
+        getGpsCoordinateFlow(context)
+            .filterNotNull()
+            .throttle(60 * 1_000) // Only update last known gps position once every minute
+            .collect { gps ->
+                saveLastKnownPosition(context, gps)
+            }
+        delay(1_000)
+    }
+}
+
+fun KarooSystemService.getGpsCoordinateFlow(context: Context): Flow<GpsCoordinates?> {
+    // return flowOf(GpsCoordinates(52.5164069,13.3784))
+
+    val initialFlow = flow {
+        val lastKnownPosition = context.getLastKnownPosition()
+        if (lastKnownPosition != null) emit(lastKnownPosition)
+    }
+
+    val gpsFlow = streamDataFlow(DataType.Type.LOCATION)
+        .map { (it as? StreamState.Streaming)?.dataPoint?.values }
+        .map { values ->
+            val lat = values?.get(DataType.Field.LOC_LATITUDE)
+            val lon = values?.get(DataType.Field.LOC_LONGITUDE)
+            val bearing = values?.get(DataType.Field.LOC_BEARING)
+
+            if (lat != null && lon != null){
+                // Log.d(KarooHeadwindExtension.TAG, "Updated gps coordinates: $lat $lon")
+                GpsCoordinates(lat, lon, bearing)
+            } else {
+                // Log.w(KarooHeadwindExtension.TAG, "Gps unavailable: $values")
+                null
+            }
+        }
+
+    val concatenatedFlow = concatenate(initialFlow, gpsFlow)
+
+    return concatenatedFlow
+        .combine(context.streamSettings(this)) { gps, settings -> gps to settings }
+        .map { (gps, settings) ->
+            gps?.round(settings.roundLocationTo.km.toDouble())
+        }
+        .dropNullsIfNullEncountered()
+}

app/src/main/kotlin/de/timklge/karooheadwind/KarooHeadwindExtension.kt

@@ -23,25 +23,32 @@ import io.hammerhead.karooext.models.UserProfile
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.retry
 import kotlinx.coroutines.flow.transformLatest
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.time.debounce
+import java.time.Duration
+import kotlin.math.absoluteValue
 import kotlin.time.Duration.Companion.hours
 import kotlin.time.Duration.Companion.minutes
 
-class KarooHeadwindExtension : KarooExtension("karoo-headwind", "1.1.2") {
+class KarooHeadwindExtension : KarooExtension("karoo-headwind", "1.1.3") {
     companion object {
         const val TAG = "karoo-headwind"
     }
 
+
     lateinit var karooSystem: KarooSystemService
 
+    private var updateLastKnownGpsJob: Job? = null
     private var serviceJob: Job? = null
 
     override val types by lazy {
@@ -62,15 +69,19 @@ class KarooHeadwindExtension : KarooExtension("karoo-headwind", "1.1.2") {
         )
     }
 
-    data class StreamData(val settings: HeadwindSettings, val gps: GpsCoordinates,
+    data class StreamData(val settings: HeadwindSettings, val gps: GpsCoordinates?,
                           val profile: UserProfile? = null)
 
-    @OptIn(ExperimentalCoroutinesApi::class)
+    @OptIn(ExperimentalCoroutinesApi::class, FlowPreview::class)
     override fun onCreate() {
         super.onCreate()
 
         karooSystem = KarooSystemService(applicationContext)
 
+        updateLastKnownGpsJob = CoroutineScope(Dispatchers.IO).launch {
+            karooSystem.updateLastKnownGps(this@KarooHeadwindExtension)
+        }
+
         serviceJob = CoroutineScope(Dispatchers.IO).launch {
             karooSystem.connect { connected ->
                 if (connected) {
@@ -80,7 +91,15 @@ class KarooHeadwindExtension : KarooExtension("karoo-headwind", "1.1.2") {
 
             val gpsFlow = karooSystem
                 .getGpsCoordinateFlow(this@KarooHeadwindExtension)
-                .transformLatest { value: GpsCoordinates ->
+                .distinctUntilChanged { old, new ->
+                    if (old != null && new != null) {
+                        old.distanceTo(new).absoluteValue < 0.001
+                    } else {
+                        old == new
+                    }
+                }
+                .debounce(Duration.ofSeconds(5))
+                .transformLatest { value: GpsCoordinates? ->
                     while(true){
                         emit(value)
                         delay(1.hours)
@@ -101,6 +120,10 @@ class KarooHeadwindExtension : KarooExtension("karoo-headwind", "1.1.2") {
                         HeadwindStats()
                     }
 
+                    if (gps == null){
+                        error("No GPS coordinates available")
+                    }
+
                     val response = karooSystem.makeOpenMeteoHttpRequest(gps, settings, profile)
                     if (response.error != null){
                         try {

app/src/main/kotlin/de/timklge/karooheadwind/OpenMeteo.kt

@@ -0,0 +1,55 @@
+package de.timklge.karooheadwind
+
+import android.util.Log
+import de.timklge.karooheadwind.datatypes.GpsCoordinates
+import de.timklge.karooheadwind.screens.HeadwindSettings
+import de.timklge.karooheadwind.screens.PrecipitationUnit
+import de.timklge.karooheadwind.screens.TemperatureUnit
+import io.hammerhead.karooext.KarooSystemService
+import io.hammerhead.karooext.models.HttpResponseState
+import io.hammerhead.karooext.models.OnHttpResponse
+import io.hammerhead.karooext.models.UserProfile
+import kotlinx.coroutines.FlowPreview
+import kotlinx.coroutines.TimeoutCancellationException
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.flow.callbackFlow
+import kotlinx.coroutines.flow.catch
+import kotlinx.coroutines.flow.single
+import kotlinx.coroutines.flow.timeout
+import kotlin.time.Duration.Companion.seconds
+
+@OptIn(FlowPreview::class)
+suspend fun KarooSystemService.makeOpenMeteoHttpRequest(gpsCoordinates: GpsCoordinates, settings: HeadwindSettings, profile: UserProfile?): HttpResponseState.Complete {
+    val precipitationUnit = if (profile?.preferredUnit?.distance != UserProfile.PreferredUnit.UnitType.IMPERIAL) PrecipitationUnit.MILLIMETERS else PrecipitationUnit.INCH
+    val temperatureUnit = if (profile?.preferredUnit?.temperature != UserProfile.PreferredUnit.UnitType.IMPERIAL) TemperatureUnit.CELSIUS else TemperatureUnit.FAHRENHEIT
+
+    return callbackFlow {
+        // https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41&current=surface_pressure,temperature_2m,relative_humidity_2m,precipitation,weather_code,cloud_cover,wind_speed_10m,wind_direction_10m,wind_gusts_10m&hourly=temperature_2m,precipitation_probability,precipitation,weather_code,wind_speed_10m,wind_direction_10m,wind_gusts_10m&timeformat=unixtime&past_hours=1&forecast_days=1&forecast_hours=12
+        val url = "https://api.open-meteo.com/v1/forecast?latitude=${gpsCoordinates.lat}&longitude=${gpsCoordinates.lon}&current=surface_pressure,temperature_2m,relative_humidity_2m,precipitation,weather_code,cloud_cover,wind_speed_10m,wind_direction_10m,wind_gusts_10m&hourly=temperature_2m,precipitation_probability,precipitation,weather_code,wind_speed_10m,wind_direction_10m,wind_gusts_10m&timeformat=unixtime&past_hours=0&forecast_days=1&forecast_hours=12&wind_speed_unit=${settings.windUnit.id}&precipitation_unit=${precipitationUnit.id}&temperature_unit=${temperatureUnit.id}"
+
+        Log.d(KarooHeadwindExtension.TAG, "Http request to ${url}...")
+
+        val listenerId = addConsumer(
+            OnHttpResponse.MakeHttpRequest(
+                "GET",
+                url,
+                waitForConnection = false,
+            ),
+        ) { event: OnHttpResponse ->
+            Log.d(KarooHeadwindExtension.TAG, "Http response event $event")
+            if (event.state is HttpResponseState.Complete){
+                trySend(event.state as HttpResponseState.Complete)
+                close()
+            }
+        }
+        awaitClose {
+            removeConsumer(listenerId)
+        }
+    }.timeout(20.seconds).catch { e: Throwable ->
+        if (e is TimeoutCancellationException){
+            emit(HttpResponseState.Complete(500, mapOf(), null, "Timeout"))
+        } else {
+            throw e
+        }
+    }.single()
+}

app/src/main/kotlin/de/timklge/karooheadwind/Utils.kt

@@ -0,0 +1,21 @@
+package de.timklge.karooheadwind
+
+import kotlin.math.abs
+
+fun signedAngleDifference(angle1: Double, angle2: Double): Double {
+    val a1 = angle1 % 360
+    val a2 = angle2 % 360
+    var diff = abs(a1 - a2)
+
+    val sign = if (a1 < a2) {
+        if (diff > 180.0) -1 else 1
+    } else {
+        if (diff > 180.0) 1 else -1
+    }
+
+    if (diff > 180.0) {
+        diff = 360.0 - diff
+    }
+
+    return sign * diff
+}

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/BaseDataType.kt

@@ -12,6 +12,7 @@ import io.hammerhead.karooext.models.DataType
 import io.hammerhead.karooext.models.StreamState
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.filterNotNull
 import kotlinx.coroutines.launch
 
 abstract class BaseDataType(
@@ -25,10 +26,12 @@ abstract class BaseDataType(
         val job = CoroutineScope(Dispatchers.IO).launch {
             val currentWeatherData = applicationContext.streamCurrentWeatherData()
 
-            currentWeatherData.collect { data ->
-                val value = getValue(data)
-                Log.d(KarooHeadwindExtension.TAG, "$dataTypeId: $value")
-                emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to value))))
+            currentWeatherData
+                .filterNotNull()
+                .collect { data ->
+                    val value = getValue(data)
+                    Log.d(KarooHeadwindExtension.TAG, "$dataTypeId: $value")
+                    emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to value))))
             }
         }
         emitter.setCancellable {

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/GpsCoordinates.kt

@@ -9,7 +9,7 @@ import kotlin.math.sin
 import kotlin.math.sqrt
 
 @Serializable
-data class GpsCoordinates(val lat: Double, val lon: Double){
+data class GpsCoordinates(val lat: Double, val lon: Double, val bearing: Double? = 0.0){
     companion object {
         private fun roundDegrees(degrees: Double, km: Double): Double {
             val nkm = degrees * 111

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/HeadwindDirectionDataType.kt

@@ -6,13 +6,13 @@ import android.util.Log
 import androidx.compose.ui.unit.DpSize
 import androidx.glance.appwidget.ExperimentalGlanceRemoteViewsApi
 import androidx.glance.appwidget.GlanceRemoteViews
+import de.timklge.karooheadwind.HeadingResponse
 import de.timklge.karooheadwind.KarooHeadwindExtension
 import de.timklge.karooheadwind.getRelativeHeadingFlow
 import de.timklge.karooheadwind.screens.HeadwindSettings
 import de.timklge.karooheadwind.screens.WindDirectionIndicatorSetting
 import de.timklge.karooheadwind.screens.WindDirectionIndicatorTextSetting
 import de.timklge.karooheadwind.streamCurrentWeatherData
-import de.timklge.karooheadwind.streamDataFlow
 import de.timklge.karooheadwind.streamSettings
 import io.hammerhead.karooext.KarooSystemService
 import io.hammerhead.karooext.extension.DataTypeImpl
@@ -30,8 +30,6 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.flow
-import kotlinx.coroutines.flow.mapNotNull
-import kotlinx.coroutines.flow.onCompletion
 import kotlinx.coroutines.launch
 import kotlin.math.cos
 import kotlin.math.roundToInt
@@ -47,7 +45,8 @@ class HeadwindDirectionDataType(
         val job = CoroutineScope(Dispatchers.IO).launch {
             karooSystem.getRelativeHeadingFlow(applicationContext)
                 .collect { diff ->
-                    emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to diff))))
+                    val value = (diff as? HeadingResponse.Value)?.diff ?: 0.0
+                    emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to value))))
                 }
         }
         emitter.setCancellable {
@@ -55,7 +54,7 @@ class HeadwindDirectionDataType(
         }
     }
 
-    data class StreamData(val value: Double, val absoluteWindDirection: Double, val windSpeed: Double, val settings: HeadwindSettings)
+    data class StreamData(val headingResponse: HeadingResponse?, val absoluteWindDirection: Double?, val windSpeed: Double?, val settings: HeadwindSettings? = null)
 
     private fun previewFlow(): Flow<StreamData> {
         return flow {
@@ -63,7 +62,7 @@ class HeadwindDirectionDataType(
                 val bearing = (0..360).random().toDouble()
                 val windSpeed = (-20..20).random()
 
-                emit(StreamData(bearing, bearing, windSpeed.toDouble(), HeadwindSettings()))
+                emit(StreamData(HeadingResponse.Value(bearing), bearing, windSpeed.toDouble(), HeadwindSettings()))
                 delay(2_000)
             }
         }
@@ -86,36 +85,47 @@ class HeadwindDirectionDataType(
         val flow = if (config.preview) {
             previewFlow()
         } else {
-            karooSystem.streamDataFlow(dataTypeId)
-                .mapNotNull { (it as? StreamState.Streaming)?.dataPoint?.singleValue }
-                .combine(context.streamCurrentWeatherData()) { value, data -> value to data }
-                .combine(context.streamSettings(karooSystem)) { (value, data), settings ->
-                    StreamData(value, data.current.windDirection, data.current.windSpeed, settings)
-                }
+            karooSystem.getRelativeHeadingFlow(context)
+                .combine(context.streamCurrentWeatherData()) { headingResponse, data -> StreamData(headingResponse, data?.current?.windDirection, data?.current?.windSpeed) }
+                .combine(context.streamSettings(karooSystem)) { data, settings -> data.copy(settings = settings) }
         }
 
         val viewJob = CoroutineScope(Dispatchers.IO).launch {
             flow.collect { streamData ->
-                    Log.d(KarooHeadwindExtension.TAG, "Updating headwind direction view")
-                    val windSpeed = streamData.windSpeed
-                    val windDirection = when (streamData.settings.windDirectionIndicatorSetting){
-                        WindDirectionIndicatorSetting.HEADWIND_DIRECTION -> streamData.value
-                        WindDirectionIndicatorSetting.WIND_DIRECTION -> streamData.absoluteWindDirection + 180
-                    }
-                    val text = when (streamData.settings.windDirectionIndicatorTextSetting) {
-                        WindDirectionIndicatorTextSetting.HEADWIND_SPEED -> {
-                            val headwindSpeed = cos( (windDirection + 180) * Math.PI / 180.0) * windSpeed
-                            headwindSpeed.roundToInt().toString()
-                        }
-                        WindDirectionIndicatorTextSetting.WIND_SPEED -> windSpeed.roundToInt().toString()
-                        WindDirectionIndicatorTextSetting.NONE -> ""
+                Log.d(KarooHeadwindExtension.TAG, "Updating headwind direction view")
+
+                val value = (streamData.headingResponse as? HeadingResponse.Value)?.diff
+                if (value == null || streamData.absoluteWindDirection == null || streamData.settings == null || streamData.windSpeed == null){
+                    var headingResponse = streamData.headingResponse
+
+                    if (headingResponse is HeadingResponse.Value && (streamData.absoluteWindDirection == null || streamData.windSpeed == null)){
+                        headingResponse = HeadingResponse.NoWeatherData
                     }
 
-                    val result = glance.compose(context, DpSize.Unspecified) {
-                        HeadwindDirection(baseBitmap, windDirection.roundToInt(), config.textSize, text)
-                    }
+                    emitter.updateView(getErrorWidget(glance, context, streamData.settings, headingResponse).remoteViews)
 
-                    emitter.updateView(result.remoteViews)
+                    return@collect
+                }
+
+                val windSpeed = streamData.windSpeed
+                val windDirection = when (streamData.settings.windDirectionIndicatorSetting){
+                    WindDirectionIndicatorSetting.HEADWIND_DIRECTION -> value
+                    WindDirectionIndicatorSetting.WIND_DIRECTION -> streamData.absoluteWindDirection + 180
+                }
+                val text = when (streamData.settings.windDirectionIndicatorTextSetting) {
+                    WindDirectionIndicatorTextSetting.HEADWIND_SPEED -> {
+                        val headwindSpeed = cos( (windDirection + 180) * Math.PI / 180.0) * windSpeed
+                        headwindSpeed.roundToInt().toString()
+                    }
+                    WindDirectionIndicatorTextSetting.WIND_SPEED -> windSpeed.roundToInt().toString()
+                    WindDirectionIndicatorTextSetting.NONE -> ""
+                }
+
+                val result = glance.compose(context, DpSize.Unspecified) {
+                    HeadwindDirection(baseBitmap, windDirection.roundToInt(), config.textSize, text)
+                }
+
+                emitter.updateView(result.remoteViews)
             }
         }
         emitter.setCancellable {

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/HeadwindSpeedDataType.kt

@@ -1,6 +1,7 @@
 package de.timklge.karooheadwind.datatypes
 
 import android.content.Context
+import de.timklge.karooheadwind.HeadingResponse
 import de.timklge.karooheadwind.OpenMeteoCurrentWeatherResponse
 import de.timklge.karooheadwind.getRelativeHeadingFlow
 import de.timklge.karooheadwind.screens.HeadwindSettings
@@ -15,6 +16,7 @@ import io.hammerhead.karooext.models.StreamState
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.launch
 import kotlin.math.cos
 
@@ -22,16 +24,17 @@ class HeadwindSpeedDataType(
     private val karooSystem: KarooSystemService,
     private val context: Context) : DataTypeImpl("karoo-headwind", "headwindSpeed"){
 
-    data class StreamData(val value: Double, val data: OpenMeteoCurrentWeatherResponse, val settings: HeadwindSettings)
+    data class StreamData(val headingResponse: HeadingResponse, val weatherResponse: OpenMeteoCurrentWeatherResponse?, val settings: HeadwindSettings)
 
     override fun startStream(emitter: Emitter<StreamState>) {
         val job = CoroutineScope(Dispatchers.IO).launch {
             karooSystem.getRelativeHeadingFlow(context)
                 .combine(context.streamCurrentWeatherData()) { value, data -> value to data }
                 .combine(context.streamSettings(karooSystem)) { (value, data), settings -> StreamData(value, data, settings) }
+                .filter { it.weatherResponse != null }
                 .collect { streamData ->
-                    val windSpeed = streamData.data.current.windSpeed
-                    val windDirection = streamData.value
+                    val windSpeed = streamData.weatherResponse?.current?.windSpeed ?: 0.0
+                    val windDirection = (streamData.headingResponse as? HeadingResponse.Value)?.diff ?: 0.0
                     val headwindSpeed = cos( (windDirection + 180) * Math.PI / 180.0) * windSpeed
 
                     emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to headwindSpeed))))

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/Views.kt

@@ -0,0 +1,47 @@
+package de.timklge.karooheadwind.datatypes
+
+import android.content.Context
+import android.util.Log
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.DpSize
+import androidx.compose.ui.unit.TextUnit
+import androidx.compose.ui.unit.TextUnitType
+import androidx.compose.ui.unit.dp
+import androidx.glance.GlanceModifier
+import androidx.glance.appwidget.ExperimentalGlanceRemoteViewsApi
+import androidx.glance.appwidget.GlanceRemoteViews
+import androidx.glance.appwidget.RemoteViewsCompositionResult
+import androidx.glance.color.ColorProvider
+import androidx.glance.layout.Alignment
+import androidx.glance.layout.Box
+import androidx.glance.layout.fillMaxSize
+import androidx.glance.layout.padding
+import androidx.glance.text.Text
+import androidx.glance.text.TextAlign
+import androidx.glance.text.TextStyle
+import de.timklge.karooheadwind.HeadingResponse
+import de.timklge.karooheadwind.KarooHeadwindExtension
+import de.timklge.karooheadwind.screens.HeadwindSettings
+
+@OptIn(ExperimentalGlanceRemoteViewsApi::class)
+suspend fun getErrorWidget(glance: GlanceRemoteViews, context: Context, settings: HeadwindSettings?, headingResponse: HeadingResponse?): RemoteViewsCompositionResult {
+    return glance.compose(context, DpSize.Unspecified) {
+        Box(modifier = GlanceModifier.fillMaxSize().padding(5.dp), contentAlignment = Alignment.Center) {
+            val errorMessage = if (settings?.welcomeDialogAccepted == false) {
+                "Headwind app not set up"
+            } else if (headingResponse is HeadingResponse.NoGps){
+                "No GPS signal"
+            } else {
+                "Weather data download failed"
+            }
+
+            Log.d(KarooHeadwindExtension.TAG, "Error widget: $errorMessage")
+
+            Text(text = errorMessage, style = TextStyle(fontSize = TextUnit(16f, TextUnitType.Sp),
+                textAlign = TextAlign.Center,
+                color = ColorProvider(Color.Black, Color.White)
+            )
+            )
+        }
+    }
+}

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/WeatherDataType.kt

@@ -10,9 +10,11 @@ import androidx.glance.appwidget.GlanceRemoteViews
 import androidx.glance.layout.Alignment
 import androidx.glance.layout.Box
 import androidx.glance.layout.fillMaxSize
+import de.timklge.karooheadwind.HeadingResponse
 import de.timklge.karooheadwind.KarooHeadwindExtension
 import de.timklge.karooheadwind.OpenMeteoCurrentWeatherResponse
 import de.timklge.karooheadwind.WeatherInterpretation
+import de.timklge.karooheadwind.getHeadingFlow
 import de.timklge.karooheadwind.screens.HeadwindSettings
 import de.timklge.karooheadwind.screens.PrecipitationUnit
 import de.timklge.karooheadwind.screens.TemperatureUnit
@@ -33,7 +35,6 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.awaitCancellation
 import kotlinx.coroutines.flow.combine
-import kotlinx.coroutines.flow.onCompletion
 import kotlinx.coroutines.launch
 import java.time.Instant
 import java.time.ZoneId
@@ -58,8 +59,8 @@ class WeatherDataType(
 
             currentWeatherData
                 .collect { data ->
-                    Log.d(KarooHeadwindExtension.TAG, "Wind code: ${data.current.weatherCode}")
-                    emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to data.current.weatherCode.toDouble()))))
+                    Log.d(KarooHeadwindExtension.TAG, "Wind code: ${data?.current?.weatherCode}")
+                    emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to (data?.current?.weatherCode?.toDouble() ?: 0.0)))))
                 }
         }
         emitter.setCancellable {
@@ -79,15 +80,23 @@ class WeatherDataType(
             de.timklge.karooheadwind.R.drawable.arrow_0
         )
 
-        data class StreamData(val data: OpenMeteoCurrentWeatherResponse, val settings: HeadwindSettings,
-            val profile: UserProfile? = null)
+        data class StreamData(val data: OpenMeteoCurrentWeatherResponse?, val settings: HeadwindSettings,
+            val profile: UserProfile? = null, val headingResponse: HeadingResponse? = null)
 
         val viewJob = CoroutineScope(Dispatchers.IO).launch {
             context.streamCurrentWeatherData()
                 .combine(context.streamSettings(karooSystem)) { data, settings -> StreamData(data, settings) }
                 .combine(karooSystem.streamUserProfile()) { data, profile -> data.copy(profile = profile) }
-                .collect { (data, settings, userProfile) ->
+                .combine(karooSystem.getHeadingFlow(context)) { data, heading -> data.copy(headingResponse = heading) }
+                .collect { (data, settings, userProfile, headingResponse) ->
                     Log.d(KarooHeadwindExtension.TAG, "Updating weather view")
+
+                    if (data == null){
+                        emitter.updateView(getErrorWidget(glance, context, settings, headingResponse).remoteViews)
+
+                        return@collect
+                    }
+
                     val interpretation = WeatherInterpretation.fromWeatherCode(data.current.weatherCode)
                     val formattedTime = timeFormatter.format(Instant.ofEpochSecond(data.current.time))
 

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/WeatherForecastDataType.kt

@@ -3,10 +3,6 @@ package de.timklge.karooheadwind.datatypes
 import android.content.Context
 import android.graphics.BitmapFactory
 import android.util.Log
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableIntStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
@@ -25,12 +21,12 @@ import androidx.glance.layout.Row
 import androidx.glance.layout.Spacer
 import androidx.glance.layout.fillMaxHeight
 import androidx.glance.layout.fillMaxSize
-import androidx.glance.layout.padding
 import androidx.glance.layout.width
+import de.timklge.karooheadwind.HeadingResponse
 import de.timklge.karooheadwind.KarooHeadwindExtension
 import de.timklge.karooheadwind.OpenMeteoCurrentWeatherResponse
 import de.timklge.karooheadwind.WeatherInterpretation
-import de.timklge.karooheadwind.saveSettings
+import de.timklge.karooheadwind.getHeadingFlow
 import de.timklge.karooheadwind.saveWidgetSettings
 import de.timklge.karooheadwind.screens.HeadwindSettings
 import de.timklge.karooheadwind.screens.HeadwindWidgetSettings
@@ -55,7 +51,6 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.awaitCancellation
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.first
-import kotlinx.coroutines.flow.onCompletion
 import kotlinx.coroutines.launch
 import java.time.Instant
 import java.time.ZoneId
@@ -74,7 +69,7 @@ class CycleHoursAction : ActionCallback {
         val data = context.streamCurrentWeatherData().first()
 
         var hourOffset = currentSettings.currentForecastHourOffset + 3
-        if (hourOffset >= data.forecastData.weatherCode.size) {
+        if (data == null || hourOffset >= data.forecastData.weatherCode.size) {
             hourOffset = 0
         }
 
@@ -101,8 +96,8 @@ class WeatherForecastDataType(
 
             currentWeatherData
                 .collect { data ->
-                    Log.d(KarooHeadwindExtension.TAG, "Wind code: ${data.current.weatherCode}")
-                    emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to data.current.weatherCode.toDouble()))))
+                    Log.d(KarooHeadwindExtension.TAG, "Wind code: ${data?.current?.weatherCode}")
+                    emitter.onNext(StreamState.Streaming(DataPoint(dataTypeId, mapOf(DataType.Field.SINGLE to (data?.current?.weatherCode?.toDouble() ?: 0.0)))))
                 }
         }
         emitter.setCancellable {
@@ -122,16 +117,23 @@ class WeatherForecastDataType(
             de.timklge.karooheadwind.R.drawable.arrow_0
         )
 
-        data class StreamData(val data: OpenMeteoCurrentWeatherResponse, val settings: HeadwindSettings,
-                              val widgetSettings: HeadwindWidgetSettings? = null, val profile: UserProfile? = null)
+        data class StreamData(val data: OpenMeteoCurrentWeatherResponse?, val settings: HeadwindSettings,
+                              val widgetSettings: HeadwindWidgetSettings? = null, val profile: UserProfile? = null, val headingResponse: HeadingResponse? = null)
 
         val viewJob = CoroutineScope(Dispatchers.IO).launch {
             context.streamCurrentWeatherData()
                 .combine(context.streamSettings(karooSystem)) { data, settings -> StreamData(data, settings) }
                 .combine(karooSystem.streamUserProfile()) { data, profile -> data.copy(profile = profile) }
                 .combine(context.streamWidgetSettings()) { data, widgetSettings -> data.copy(widgetSettings = widgetSettings) }
-                .collect { (data, settings, widgetSettings, userProfile) ->
-                    Log.d(KarooHeadwindExtension.TAG, "Updating weather view")
+                .combine(karooSystem.getHeadingFlow(context)) { data, headingResponse -> data.copy(headingResponse = headingResponse) }
+                .collect { (data, settings, widgetSettings, userProfile, headingResponse) ->
+                    Log.d(KarooHeadwindExtension.TAG, "Updating weather forecast view")
+
+                    if (data == null){
+                        emitter.updateView(getErrorWidget(glance, context, settings, headingResponse).remoteViews)
+
+                        return@collect
+                    }
 
                     val result = glance.compose(context, DpSize.Unspecified) {
                         Row(modifier = GlanceModifier.fillMaxSize().clickable(onClick = actionRunCallback<CycleHoursAction>()), horizontalAlignment = Alignment.Horizontal.CenterHorizontally) {

app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <color android:color="#FFFFFF" />
+    </item>
+</layer-list>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>

app/src/main/res/values/ic_launcher_background.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <color name="ic_launcher_background">#000000</color>
-</resources>

app/src/main/res/values/styles.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="SplashTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+</resources>

app/src/main/res/xml/extension_info.xml

@@ -1,35 +1,35 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ExtensionInfo
     displayName="@string/extension_name"
-    icon="@drawable/ic_launcher"
+    icon="@drawable/wind"
     id="karoo-headwind"
     scansDevices="false">
     <DataType
         description="@string/headwind_description"
         displayName="@string/headwind"
         graphical="true"
-        icon="@drawable/ic_launcher"
+        icon="@drawable/wind"
         typeId="headwind" />
 
     <DataType
         description="@string/weather_description"
         displayName="@string/weather"
         graphical="true"
-        icon="@drawable/ic_launcher"
+        icon="@drawable/wind"
         typeId="weather" />
 
     <DataType
         description="@string/weather_forecast_description"
         displayName="@string/weather_forecast"
         graphical="true"
-        icon="@drawable/ic_launcher"
+        icon="@drawable/wind"
         typeId="weatherForecast" />
 
     <DataType
         description="@string/headwind_speed_description"
         displayName="@string/headwind_speed"
         graphical="false"
-        icon="@drawable/ic_launcher"
+        icon="@drawable/wind"
         typeId="headwindSpeed" />
 
     <DataType
@@ -50,21 +50,21 @@
         description="@string/windSpeed_description"
         displayName="@string/windSpeed"
         graphical="false"
-        icon="@drawable/ic_launcher"
+        icon="@drawable/wind"
         typeId="windSpeed" />
 
     <DataType
         description="@string/windGusts_description"
         displayName="@string/windGusts"
         graphical="false"
-        icon="@drawable/ic_launcher"
+        icon="@drawable/wind"
         typeId="windGusts" />
 
     <DataType
         description="@string/windDirection_description"
         displayName="@string/windDirection"
         graphical="true"
-        icon="@drawable/ic_launcher"
+        icon="@drawable/wind"
         typeId="windDirection" />
 
     <DataType